Water-joint.



No. 695539." Patented 1an. 2|, |902.

M. GARVEY. WATER JoNT.

(Application filed Apr. 23, 1900.) (No Model.) v

Tn: norms Firms co., PHOTO-mwa., wnsmucmu. nA c.

UNITED STATES MATTHIAS GARVEY, OF OROW'NPOINT, NEYV YORK.

WATER- JOINT.

SPECIFICATION forming part of Letters Patent N o. 691,539, dated January 21, 1902.

Application filed April 23, 1900.

To a/ZZ whom zit nur/y concern:

Be it known that I, MATTHIAS GARVEY, a citizen of the United States, and a resident of Crownpoint, in the county of Essex and State of New York, have invented a new and Improved VVater-Joint, of which the following is a full, clear, and exact description.

This invention is especially adapted for use in connection with diamond rock-drills, the object being to provide superior means for connecting the water-pipe with the drill-rod. Heretofore great difficulty has been experienced in eecting this connection, since it should be understood that the drill-rod must turn continuously, whereas the Water-pipe cannot be turned. Owing to the necessary movement of the parts it has been found very difficult to pack the connection between these two elements, and great inconvenience commonly arises. My invention seeks to overcome these objections.

This specication is the disclosure of one form of the invention, while the claims define the actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a longitudinal sectional view of the invention. Fig. 2 is an elevation with parts in section. Fig. 3 is a section on the line 3 3 of Fig. 1,-and Figuet is a detail view of the water-pipe. Y

Referring to Fig. l, c represents the hollow drill-rod, and b the water-pipe. The coupling` thimble c has its'lower end c reduced and screw-threaded to permit thel engagement of the drillrod a therewith. The shoulder formed on the thimble c by the reduced end cis provided with a leather packing-gasket d, seated in an annular undercut cavity in the thimble and in position to be engaged by the end vof the drill-rod, so that when the drill-rod is screwed into the position shown its end engages with the gasket d and effects a secure connection therewith, such as will not only effectively prevent leakage at this point, but will also be secure and durable without necessitating frequent repacking, as is the case with the wick packing usually employed in this connection. The width of the gasket b, and consequently of the undercut Serial No. 13,915. (No model.)

cavity in the shoulder, is equal to the thickness of the material forming the drill-rod, so that the end of the drill-rod'will engage no part other than the gasket.A

The thimble c has the water-pipe b passed centrally therethrough, the water-pipe terminating at the lower end of the extension c', and the upper portion of the thimble is counterbored to form a cavity c2. This cavity contains a leatherc'up-packing e, which is held between two packing-collars f and f',

fastened by left-hand threads on the waterpipe b. The packing e engages rmly with the walls of the counterbore c2 in the thimble c and effects a secure packing at this point, absolutely preventing the backflow of the water through the counterbore c2 of the thimble. It will further be observed that the form of packing employed being properly lubricated when in use is nearly frictionless, thus rendering the relative movement of the drill-rod and water-pipe easier. The lefthand threads on the water-pipe cause the 'collars f and f to be turned securely thereon by the very operation of the apparatus. Heretofore a plane shoulder has been formed on the Water-pipe and wicking wound around the pipe against the shoulder and the pipe forced into position, so that the wicking serves as a packing. The pressure which it is necessary to place on this packing renders the friction so great that it is impossible to drive the drill-rod independently of the water-pipe without tending to turn the water-pipe and disrupt the hose connected therewith.

AInto the upper portion of the counterbore c2 of the thimble c I screw a cap g for closing the counterbore, such cap having left-hand threads thereon for the same reason that the threads of the water-pipe are left-hand. This cap g projects down into the counterbore and bears -tightly on a ring h, which is sustained on the collar f by bearing-balls t', carried in a suitable cage 7c. The pressure of the cap g on the ring or collar h is transferred to the packing-collars f and f' through the medium of the bearing-balls, and thus the packing is engaged firmly with the walls of the counterbore. This pressure is transmitted, however, without material increase in friction, owing to the ball-bearings provided between the ring or collar 7L and the packing-ring f', it

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being understood that the ring h turns with the thimble c and cap g and that the packing-collars f and f', with the packing e, are stationary with the water-pipe. By means of this'arrangement the drill-rod may be driven continuously at the necessary speed without interfering with the water-pi pe, which, owing to the slight friction caused by the relative movement of these parts,wil1 not be disturbed by the rotation of the drill-rod. Further, owing to the effective packing produced by the cup e leakage throughthe thimble is prevented.

' It will thus be seen that I provide a most eective packing and at the same time materially decrease the friction caused by the movements of the various parts.

Various changes in the form, proportions, and minor details of my invention may bevresorted to without departing from the spirit and scope of myinvention. Hence I consider myself entitled to all such variations as may lie within the scope of my claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A water-joint, comprising a thimble, a water-pipe passed therethrough, the thimble havingacounterbore therein to form a cavity, a cap screwed int'o the cavity, a packing carried fast on the water-pipeand situated within the cavity, and ball-bearings placed between the packing and the cap.

2. A water-joint, comprising a thimble,'a water-pipe passed thereinto, the thimble having a cavity into which the water-pipe eX- tends, and a packing carried by the waterpipe and seated in the cavity, to pack the interior walls thereof.

3. A water-joint, com prisinga thimble with a bore and counterbore, a water-pipe passed through the bore of the thimble, and a packing carried by the water-pipe and situated in the counterbore of the thimble, the packing comprising a cup and rings or the like, the

, members being fastened to the water-pipe and having the cup sandwiched between them.

4:. A water-joint, comprising a thimble with a bore and counterbore, a water-pipe passed through the thi'mble, `a packing carried by the water-pipe and seated in the connterbore of the thimble, a cap fitted in the outer portion of the counterbore, and antifriction-bearing devices interposed between the cap and the packing, to transmit to thepacking the pressure of the cap.

5. A water-joint, having a thinrble with a reduced extension serving to receive the tubular drill-rod, and the thimble having an- 

